Henry horne



H. BORNE.

(No Model.)

PADLOGK.

No. 499,832, Patented June 20. 1893.

Yi q. 1L.

Wmwsses.

UNrrnD STATES PATENT OFFICE.

HENRY HORNE, OF NEIV BRITAIN, CONNECTICUT, ASSIGNOR TO THE CORBIN CABINET LOCK COMPANY, OF SAME PLACE.

PADLOCK.

SPECIFICATION forming part of Letters Patent No. 499,832, dated June 20, 1893.

' Application led March 11, 189,3. Serial No. 465.632. (No model.)

necticut, have invented certain new and use-- f ul Improvements in Padlocks, of which the following is a specification.

My invention relates to improvements in padlocks, and the objects of my improvement are simplicity of construction and general efciency and in particular to compactly arrange the key cylinder and tumblers.

In the accompanying drawings, Figure l is a side elevation of my padlock with the cap or front plate removed, together with a sectional view of the chain head in proper position to be inserted within the lock. Fig. 2`is a sectional view of my padlock on the line of Fig. I Fig. 3 is a sectional view on the line y y of Fig. l. Fig. 4: is a side elevation of the key, and Fig. 5 is a detached side elevation of the set of tumblers as viewed upon the reverse side from that shown in Fig. l.

The case may be of any desired form, but

I prefer the round form illustrated in the drawings. It is made in two parts 6 and 7 iitted and held together in any suitable manner. I prefer to secure these cases together by suitable cheek pieces or studs S by passing the tenons of said studs through perforations in the two parts of the case and heading them down therein. In the central portion of the case is arranged an ordinary slotted key cylinder 9 designed to receive and guide the flat key l0 of ordinary construction. This key cylinder is mounted in suitable bearings at one end in the edge of the case and at its inner end in a stud ll. In Fig. 2 I have broken away a part of this cylinder in order to better show the parts in the rearof the same.

Substantially in a diametrical position from the outer end of the key cylinder 9, is an opening l2 to receive the head or staple I3 which is designed to be attached to one end of a chain, not shown. The opposite end of the chain is designed to be attached to the case by means of the T shaped piece 14, shown in Fig. I, the chain thus attached serving as the shackle of the padlock. 'By the side of the key cylinder 9 and substantially` parallel thereto, I pivot a set of tumblers 14, 15 and 16. Each of these tumblers is provided with a prong or projection which stands at right angles to the sides of the tumblers, the prong 140 belonging to the tumbler 14, the prong 150 belonging to the tumbler l5 and the prong 160 belonging to the tumbler I6. These tumblers areall pivoted at 17 and provided with the usual spring I8. In order to bring the tumbler I6 away from the side of the case to give its prong 160 a suitable length for the operation of the key thereon, I mount the tumblers upon vthe plate 19 which is secured to the inside of the case 6 and is slotted in the line of the key cylinder to make room for the key and for the projection of the tumbler prongs. If desired this plate might be formed as an integral part of the case. I also build up the interior of the part 7 of the case by another plate 20, which may if desired also be formed as an integral part 'of the case. The inner end of the key cylinder is slabbed oi on one side to make a face that is parallel to-the key slot and against which one of the ktumblers may rest as shown in Figs. 1 and 3.

The pressure of the spring 18 on the said tumbler `will cause the key cylinder when left free, to be held with its slot in the proper position for the insertion and withdrawal of the key. Each of the tumblers is provided with a wing or dog 2l which when the tumblers are in their normal position projects into the path ofthe head or staplelS and which when the staple has been inserted to the proper depth will snap into the opening in said head or staple to secure it within the case. A swinging knockout 22 is arranged to project into the path of this staple and is provided with a spring 23 for holding it in its normal position. When the staple is inserted, it strikes this knockout and forces it in the direction to compress its spring so that when the dogs of the tumblers are Withdrawn, the spring actuated knockout will eject the staple from the case.

In unlocking the staple or head 13, the key is inserted within the key cylinder 9 and turned in a direction to bring its talons or bitted portion 24 against VVthe prongs of the tumblers to set them and throw them back, the key being substantially in an edgewise position to the tumblers when they are thus lifted or thrown back. The pressure of the,

IOO

tumbler which bears against the slabbed off portion of the key cylinder will have a tendency to return the key cylinder to its normal position, especially after the key has been partially turned back. I prefer to so arrange the tumblers and key that when the tumblers are set by the key, the flat surface of the metal forming the sides of the key will be slightly inclined with reference to the broad sides of the tumblers, in which case the pressure of the tumbler upon the key cylinder will return it to its normal positionas soon as the key is released.

I claim as my invention- 1. The combination of the key cylinder 9 and a set of tumblcrs arranged substantially HENRY HORNE.

Witnesses:

GEO. W. CORBIN, W. C. BIGELOW. 

